Report of the Special Study Mission to Poland by Hon. Clement J. Zablocki, Wisconsin, Chairman, Pursuant to H. Res. 60, a Resolution Authorizing the Committee on Foreign Affairs to Conduct Thorough Studies and Investigations of All Matters Coming Within the Jurisdiction of Such Committee. July 12, 1961. -- Committed to the Committee of the Whole House on the State of the Union and Ordered to be Printed